fvkrantz



H. F, KRANTZ. SWITCHBOARD 0H SWITCH PANEL: 3

APPLICAJION FILED JULY 11. 1913. RENEWED AUG. 29. 1911.

1,320,154. v Patented 0ct.28,1919.

2 SHEETSSHEET Ii UNITED STATES PATENT OFFICE.

HUBERT F. KRANTZ, OF BROOKLYN, NEW YORK, ASSIGNOR TO KBANTZ MANUFACTUR- IN 'G COMPANY IHCL, OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

I SWITCHBOARD OR SWITCH-PAN EL.

Specification of Lettersratent. P tented Opt. 28, 19.19.

Application filed July 11, 1913, Serial N0. 778,451. Renewed August 29, 1917.- Serial No, 188,869.

To all whom it may concern:

Be it known that I, HUBERT F. KRANTZ, a citizen of the United States, residing at Brooklyn, in the county of Kings, city and State ofNew York, have invented certain new and useful Improvements in Switchboards or Switch-Panels, of which the fol lowing is a clear, full, and exact description.

This invention relates to a switch board or panel.

The object of the invention is to provide a switch board particularly adapted for use in connection with a three-wire system, and in which numerous branch line connections with the three bus bars employed may be efficiently made through the use of suitable switches.

A further object is to so. devise the parts of the device that the contact portions of certain of the bus bars will stand in a common plane substantially in alinement withseach other adapted for cooperative engagement'by a suitable switch element which bridges directly between said alined contacts and suitable branch line contacts.

A further object is to provide simple and eflicient means for retaining the bus bar contact portions in the relation above indicated.

Other objects and aims of the invention, more or less specific than those referred to above, will be in part obvious and in part pointed out in the course of the following description of the elements, combinations,-

arrangements of parts and applications of principles, constituting the invent1on; and the scope of protection contemplated Will be indicated in the appended claims.

In the accompanying drawings which are to be taken as a part of this specification, and in which Iwhave shown merely a preferi' 'ed'iform of embodiment of theinvention.

Figure l is a lan view of a portion of a panel board built according to my invention.

Fig. 2 is an end view of the same. Fig. 3 is a view at right angles to Fig. 2 in said elevation.

'Fig. 4 is a side elevation of the switch. Fig. 5 is a top plan view of the switch. Fig. 6 is a central sectional view of the switch on line 6-6, Fig. 5.

' Fig. 7 is a plan view of the switch guide.

Fig. 8 is a section on line 88, Fig. 6. Fig. 9 is a section on line 9-9, Fig. 6.

Fig. 10 is a section on line 10 10, Fig. 6. i

Fig. 11 is a section on line 1111,* Fig. 6. Referrin to the drawin for describing in detail t e structure whidh is illustrated.

therein, the reference character 1 indicates the base'or back plate ofthe board which.

is of suitable insulatingqnaterial A ridge .itan'd in a plane lower than the neutral bus 9 ar.

All three of the bus bars may be secured in position by any suitable means, as for instance by the screws indicated in the drawings.

At spaced points along the length of the neutral bus bar said bus bar is formed with lateral extensions 6"-which project outwardly from opposite sides of the neutral bus bar above the positive and negative bus bars. These extensions 6 are preferably separately formed and are held between the neutral bus bar and the upper surface of the barrier 2 as shown. Suitable screws, as seen in Fig. 1, may be employed to make a more positive electrical connection with the bus bar if desired.

The outer ends of the extensions 6 constitute switch contacts.

The positive and negative bus bars 4 and 5 have lateral extensions 8 and 7 respectively. These extensions are preferably separately formed and arefixed to said bus bars 4 and 5. .They project u wardly from their respective bus bars an their upper ends constitute switch contacts disposed in the plane of, and in alinement with, the contact portions of the extensions 6.

Preferably the contact portions of the extensions 6, 7 and 8 are bent obliquely as indicated so as to better cooperate with the type of switch blade illustrated though this is not essential, as will be clearly apparent.

Branch circuit blocks 9 are arranged upon the board separated from the branch circuit blocks 10 so as to accommodate suitable fuses which may be connected between them during use. The branch circuit blocks 10' are spaced away from the bus bars to pro- The switches 11 are preferably all of the same type and each comprises a pair of 2O spaced apart.

switch blades 12 and 13. These are carried upon the under surface of an insulating block 1& and are adapted to move with the insulating block toward and awa from the surface of the board 1. The-switch blades are arranged parallel and spaced apart and one blade is disposed, when the block is moved toward the board, to electrically bridge between one of the extensions 6 and one of the branch circuit blocks 10 while the other blade electrically bridges between the extension 7 (or 8) and an adjacent branch circuit block 10.

It will be seen in the drawings that there are two branch circuit blocks 10 for each switch mechanism and that the extension 6 for each switch mechanism is arranged in a vertical plane spaced from the adjacent extension 7 (or 8) so that said extensions 6 and 7 lie in line with the respective branch circuit blocks 10.

The contact portions of the branch circuit blocks 10 preferably extend upwardly to the horizontal plane of the contact portions of the extensions 6, 7 and 8 so as to simplify thelform ofthe switch blade.

In the arrangement shown in the drawings the upstanding extensions-7 and 8 have their contact portions disposed in line with and intermediate the contact portions of two extensions 6.,and spaced: ample distances away from the neutral bus bar andcfrom the extensions 6. This provides a very compact and efiicient arrangement.

In the construction of switchmechanism illustrated the insulating .block- 14 ismounted upon a sleeve 1:5yei'tically upon a guide standard 18.

A flange 17 held byserews 1 5, retains the standard in position upon the-base board. 45

inet'al bent as clearly shown in Figs. 7 to 10,

This standard is preferably made of sheet so as to provide two hollow cylinders- 19' and The portion 123 of the standard between the cylinders is ,provided with an elongated verticallslotf2 t having an enlarged opening 25 at its lower end. A latch 26 is'arranged between the. opposite members of the standard and is pivotally mounted as at 27. A knob 28' formed upon the latch projects into the cylinder 20 and engages within a recess formed at the lower end of a push button plunger 27.. A compression spring 22 is arranged within the cylinder 20 to press the push button plunger 27 upwardly and thereby to hold the latch normally in latching position for engaging a cross pin 28 which is carried by the sleeve 15 and which slides along the length of the slot 24 as the sleeve is moved up and down.

Pressure upon the push button plunger 27 will swing the latch to disengage the cross in 28 and permit a compression spring 21 in the cylinder 19 to move the sleeve upwardly. I

The sleeve 15 has a portion extending upwardly about the cylinder 19 and said portion is shaped to constitute a push button 30 by means of which the sleeve may be moved downwardly against the tension of the spring 21 atwill. v

The standard is preferably pressed from a single piece of sheet metal substantially as shown.

As many changes could be made in this construction without departin from the scope of the invention as define? in the following claims, it is intended that all matter contained in the above description or shown in the accompanying drawings, shall be interpreted as illustrative only and not in a limiting sense. V

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:-

l. A panel-board combining a positive and a negative bus bar arranged flatwise in '.a common plane, a neutral bus bar arranged equi-distant from said bus bars in another plane parallel to said common plane, each of said bus bars having extensions all term nating in contact portions located in alinement in the same plane, branch line conductors having terminals all located in alinement in said last mentioned-plane, and switches located between said terminals and extensions and adapted to non-rotatably reciprocate bodily transversely to said plane to establish connection between said conduct'ors and said contact portions.

2. A panel-board comprising a positive and a negative bus bar arranged flat-wise in a common plane, a neutral bus bar arranged equi-distant from said bus bars in a plane parallel to the common plane, said bus bars having upwardly and downwardly projecting extensions terminating in contact portions located in alinement in the same plane, branch line conductors having terminals located in alinement with the con tact portions, and switches disposed between the said terminals and extensions and adapted to establish connection between the conductors and said contact portions.

3. A panel-board comprising a positive and a negative bus bar disposed flat-wise in a common plane, a neutral bus bar disposed between the same in a plane parallel therewith, downwardly projecting extensions from the neutral bus bar and upwardly projecting extensions from the other has bar, said extensions having contact portions thereon that are disposed in a common plane.

4. A panel-board for three-wire systems comprising a positive and a negative bus bus bar disposed in a bar dis-posed in a common plane, a neutral bus bar disposed in a plane parallel to the common plane and in parallel relation to the other bus bar and a plurality of upwardly and downwardly projecting extensions from the bus bars having contact portions thereon that are located in the same plane.

5. A panel board for three-wire systems comprising a positive and a negative bus bar disposed in a common plane, a neutral plane parallel to the common plane and in parallel relation to the other bus bar, and a plurality of upwardly and downwardly projecting extensions from the bus bars having contact portions thereon that are located alinenient in a plane substantially parallel with the neutral bus bar.

6. A panel-board for three-wire systems comprising a positive and a negativebus bar,

disposed in a common plane, a neutral bus bar disposed between the same and parallel thereto, and upwardly and downwardly projecting extensions from-the bus bars having switch contact portions thereon, said extensions being of such shape that theyare space insulated from certain of the bus bars and the contact portions thereof are disposed in a single plane.

Signed at Brooklyn, county of Kings, city and State of New York, this 8th day of J uly, 1913.

HUBERT F. KRANTZ.

Witnesses:

J. A. NEWTON, S. L. WHITLOCK. 

